The sapphire watch mirror is made of optical grade sapphire and comes in two configurations: positive and negative mirrors. Unlike glass lenses, sapphire is difficult to achieve laser grade surface quality.

Performance specifications

Radius R ≥ 3.0

Concentration ≥ 1 ′

Diameter 5.00-50.80mm

Surface image 5 λ~λ/2

Surface quality 80/50~20/10

At 45 degrees, the oblique angle is 0.25 millimeters

Coating single-layer or multi-layer thin film

Typical applications of sapphire lenses include:

Infrared laser optical devices

? Imaging optics

Chemical resistant front surface optical components

? Focusing optical components